GB2176321B - Apparatus for performing a fast fourier transform - Google Patents

Apparatus for performing a fast fourier transform

Info

Publication number
GB2176321B
GB2176321B GB08513959A GB8513959A GB2176321B GB 2176321 B GB2176321 B GB 2176321B GB 08513959 A GB08513959 A GB 08513959A GB 8513959 A GB8513959 A GB 8513959A GB 2176321 B GB2176321 B GB 2176321B
Authority
GB
United Kingdom
Prior art keywords
fourier transform
fast fourier
fast
transform
fourier
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB08513959A
Other versions
GB2176321A (en
GB8513959D0 (en
Inventor
David William Cowen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens Mobility Ltd
Original Assignee
Westinghouse Brake and Signal Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Westinghouse Brake and Signal Co Ltd filed Critical Westinghouse Brake and Signal Co Ltd
Priority to GB08513959A priority Critical patent/GB2176321B/en
Publication of GB8513959D0 publication Critical patent/GB8513959D0/en
Priority to US06/855,247 priority patent/US4763290A/en
Priority to DE86303207T priority patent/DE3688148T2/en
Priority to EP86303207A priority patent/EP0204420B1/en
Priority to NZ216022A priority patent/NZ216022A/en
Priority to CN198686103321A priority patent/CN86103321A/en
Priority to JP61118980A priority patent/JPH0812658B2/en
Priority to AU58257/86A priority patent/AU586375B2/en
Publication of GB2176321A publication Critical patent/GB2176321A/en
Application granted granted Critical
Publication of GB2176321B publication Critical patent/GB2176321B/en
Priority to SG366/89A priority patent/SG36689G/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/14—Demodulator circuits; Receiver circuits
    • H04L27/144—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements
    • H04L27/152—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements using controlled oscillators, e.g. PLL arrangements
    • H04L27/1525—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements using controlled oscillators, e.g. PLL arrangements using quadrature demodulation
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/10—Complex mathematical operations
    • G06F17/14—Fourier, Walsh or analogous domain transformations, e.g. Laplace, Hilbert, Karhunen-Loeve, transforms
    • G06F17/141—Discrete Fourier transforms

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Data Mining & Analysis (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • Computational Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Databases & Information Systems (AREA)
  • Software Systems (AREA)
  • Discrete Mathematics (AREA)
  • Algebra (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Complex Calculations (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
GB08513959A 1985-06-03 1985-06-03 Apparatus for performing a fast fourier transform Expired GB2176321B (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
GB08513959A GB2176321B (en) 1985-06-03 1985-06-03 Apparatus for performing a fast fourier transform
US06/855,247 US4763290A (en) 1985-06-03 1986-04-24 Apparatus for performing a fast Fourier transform
DE86303207T DE3688148T2 (en) 1985-06-03 1986-04-28 Device for performing a fast Fourier transformation.
EP86303207A EP0204420B1 (en) 1985-06-03 1986-04-28 Apparatus for performing a fast fourier transform
NZ216022A NZ216022A (en) 1985-06-03 1986-05-01 Apparatus for performing a fast fourier transform
CN198686103321A CN86103321A (en) 1985-06-03 1986-05-14 Realize the device of fast Fourier transform
JP61118980A JPH0812658B2 (en) 1985-06-03 1986-05-23 High-speed Fourier converter
AU58257/86A AU586375B2 (en) 1985-06-03 1986-06-02 Apparatus for performing a fast fourier transform
SG366/89A SG36689G (en) 1985-06-03 1989-06-09 Apparatus for performing a fast fourier transform

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08513959A GB2176321B (en) 1985-06-03 1985-06-03 Apparatus for performing a fast fourier transform

Publications (3)

Publication Number Publication Date
GB8513959D0 GB8513959D0 (en) 1985-07-03
GB2176321A GB2176321A (en) 1986-12-17
GB2176321B true GB2176321B (en) 1988-09-21

Family

ID=10580083

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08513959A Expired GB2176321B (en) 1985-06-03 1985-06-03 Apparatus for performing a fast fourier transform

Country Status (9)

Country Link
US (1) US4763290A (en)
EP (1) EP0204420B1 (en)
JP (1) JPH0812658B2 (en)
CN (1) CN86103321A (en)
AU (1) AU586375B2 (en)
DE (1) DE3688148T2 (en)
GB (1) GB2176321B (en)
NZ (1) NZ216022A (en)
SG (1) SG36689G (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2300502B (en) * 1995-04-11 1998-05-27 Int Mobile Satellite Org An electronic circuit for and a method of decoding a signal
US6549925B1 (en) 1998-05-18 2003-04-15 Globespanvirata, Inc. Circuit for computing a fast fourier transform
US6490672B1 (en) 1998-05-18 2002-12-03 Globespanvirata, Inc. Method for computing a fast fourier transform and associated circuit for addressing a data memory
JP3927463B2 (en) * 2002-07-30 2007-06-06 トヨタ自動車株式会社 Digital signal processing receiver
US7543010B2 (en) * 2003-11-03 2009-06-02 Board Of Regents, The University Of Texas System Modular pipeline fast Fourier transform
JP4295777B2 (en) * 2006-09-26 2009-07-15 Ｏｋｉセミコンダクタ株式会社 Fast Fourier transform circuit and fast Fourier transform method
US20090173841A1 (en) * 2008-01-09 2009-07-09 Ajith Kuttannair Kumar Methods and systems for detecting cab signals

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3950750A (en) * 1974-10-03 1976-04-13 Raytheon Company Radar system having quadrature phase detector compensator
US4075630A (en) * 1976-09-01 1978-02-21 Raytheon Company Signal processor
US4054785A (en) * 1976-09-16 1977-10-18 Sangamo Weston, Inc. Spectrum analyzer with multiple operational modes
US4334273A (en) * 1979-04-24 1982-06-08 Kokusai Denshin Denwa Co., Ltd. Signal processing system using a digital technique
GB2110439B (en) * 1981-11-12 1985-03-06 Standard Telephones Cables Ltd Digital data processing
US4612545A (en) * 1981-12-03 1986-09-16 Itek Corporation Automatic frequency identifier for radar signals
IN158693B (en) * 1981-12-22 1987-01-03 Westinghouse Brake & Signal
US4646256A (en) * 1984-03-19 1987-02-24 The Board Of Trustees Of The Leland Stanford Junior University Computer and method for the discrete bracewell transform
US4665366A (en) * 1985-03-11 1987-05-12 Albert Macovski NMR imaging system using phase-shifted signals

Also Published As

Publication number Publication date
EP0204420B1 (en) 1993-03-31
EP0204420A3 (en) 1990-10-31
EP0204420A2 (en) 1986-12-10
SG36689G (en) 1989-10-13
AU586375B2 (en) 1989-07-06
DE3688148T2 (en) 1993-10-21
US4763290A (en) 1988-08-09
JPS61281365A (en) 1986-12-11
DE3688148D1 (en) 1993-05-06
GB2176321A (en) 1986-12-17
NZ216022A (en) 1989-02-24
GB8513959D0 (en) 1985-07-03
JPH0812658B2 (en) 1996-02-07
CN86103321A (en) 1986-12-03
AU5825786A (en) 1986-12-11

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20030603